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聚谷氨酸批式生物合成的主要影响因素研究 被引量:7

Main factors effecting the biosynthesis of poly(glutamic acid)
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摘要 采用Bacillus subtilis NX-2菌株,在5 L发酵罐批式操作过程中生物合成γ-聚谷氨酸,实验考察了搅拌转速(300~1 000r/min)及底物质量浓度对生物合成γ-聚谷氨酸产率的影响.结果表明:转速为400r/min时,γ-聚谷氨酸产率最高,可高达21.78g/L.在转速400r/min的条件下,考察了葡萄糖和谷氨酸浓度对聚谷氨酸生物合成的影响,根据葡萄糖初始质量浓度为40g/L的实验数据建立了动力学方程.并在葡萄糖初始质量浓度为30,40,50,60g/L的范围内,验证所建动力学方程的稳定性和实用性.结果表明,在以上葡萄糖初始质量浓度范围内,所建模型对B.subtilis NX-2批式生物合成γ-聚谷氨酸产率的预测值与实验值能较好的吻合. The effects of agitation speed and substrate on γ-Poly(glutamic acid) (γ-PGA) Production of Bacillus subtilis NX-2 in 5 L fermenter were investigated. The results indicated that the highest yield of γ-PGA could obtained 21.78 g/L with 400 r/min. Based on experimental data of initial glucose concentration 40 g/L at 400 r/min, the kinetic equations of substrate for γ-PC, A biosynthesis was established. With the initial glucose concentration from 30 to 60 g/L, the proposed kinetic models were to be proved and the results showed that the theoretical predicted data of γ-PGA production by Bacillus subtilis NX-2 fitted the experimental data pretty well.
出处 《生物加工过程》 CAS CSCD 2006年第1期65-69,共5页 Chinese Journal of Bioprocess Engineering
基金 国家"863"计划资助项目(编号:2002AA327020) 江苏省高技术基金资助项目(编号:BG2001043)
关键词 聚谷氨酸 搅拌转速 动力学 分批发酵 poly(glutamic acid) agitation speed kinetic biosynthesis
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参考文献10

  • 1[1]Shih I L,Van YT.The production of poly-(γ-glutamic acid) from microorganisms and its various applications[J].Bioresource Technology,2001,79:207-225.
  • 2[2]Yoon S,Do J,Lee S,et al.Production of poly-γ-glutamic acid by fedbatch culture of Bacillus licheniforms[J].Biotechnol Lett,2000,22:585-588.
  • 3[3]Lee SY,Chang HN.Method for manufacturing highly-concentrated polyglutamic acid with additional supply of saccharides:US,0124674A1[P].2003.
  • 4[4]Richard A,Margaritis A.Optimization of cell growth and poly(glutamic acid) production in batch fermentation by Bacillus subtilis[J].Biotechnol Lett,2003,25:465-468.
  • 5杨革,陈坚,曲音波,伦世仪.细菌聚γ-谷氨酸溶液流变性能的研究[J].高分子学报,2002,12(3):345-348. 被引量:6
  • 6[6]Andrew Richard,Argyrios Margaritis.Empirical modeling of batch fermentation kinetics for poly(glutamic acid) production and other microbial biopolymers[J].Biotechnol Bioeng,2004,87:501-515.
  • 7桑莉,徐虹,李晖,张鲁嘉,姜岷.γ-聚谷氨酸产生菌的筛选及发酵条件[J].过程工程学报,2004,4(5):462-466. 被引量:35
  • 8[8]Ivanovics G,Erdos Z.Ein beitrag zum wesen der kapselsubstanz des milzbrandbazillus[J].Z Immunitatsforsch,1937,90:5-19.
  • 9[9]Johns MR,Goh LT,Oeggerli A.Effect of pH,agitation and aeration on hyaluronic acid produced by Streptococcus Zooepidemicus[J].Biotech Lett,1994,16(5):507-512.
  • 10[10]Kambourova M,Tangney M,Priest FG.Regulation of polyglutamic acid synthesis by glutamate in bacillus licheniforms and Bacillus subtilis[J].Appl Environ Microbiol,2001,67:1 004-1 007.

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